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#archaeopteryx #fossil feather #fossil skeleton #urvogel #feathered dinosaur #palaeontology #limestone fossil #ancient bird

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#archaeopteryx #fossil evolution #bird origins #palaeontology #transitional fossil #ancient bird

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#archaeopteryx #solnhofen limestone #palaeontology #fossil discovery #ancient fossil #feathered fossil

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#ampthill clay #geological formation #fossil analysis #palaeontology #sedimentary geology #jurassic stratigraphy

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#ampthill clay #jurassic fossils #marine reptile fossil #vertebrate fossil #palaeontology